net/quic/quic_session_test.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "net/quic/quic_session.h"
   6
   7 #include <set>
   8 #include <vector>
   9
  10 #include "base/basictypes.h"
  11 #include "base/containers/hash_tables.h"
  12 #include "net/quic/crypto/crypto_protocol.h"
  13 #include "net/quic/quic_crypto_stream.h"
  14 #include "net/quic/quic_flags.h"
  15 #include "net/quic/quic_protocol.h"
  16 #include "net/quic/quic_utils.h"
  17 #include "net/quic/reliable_quic_stream.h"
  18 #include "net/quic/test_tools/quic_config_peer.h"
  19 #include "net/quic/test_tools/quic_connection_peer.h"
  20 #include "net/quic/test_tools/quic_data_stream_peer.h"
  21 #include "net/quic/test_tools/quic_flow_controller_peer.h"
  22 #include "net/quic/test_tools/quic_session_peer.h"
  23 #include "net/quic/test_tools/quic_test_utils.h"
  24 #include "net/quic/test_tools/reliable_quic_stream_peer.h"
  25 #include "net/spdy/spdy_framer.h"
  26 #include "net/test/gtest_util.h"
  27 #include "testing/gmock/include/gmock/gmock.h"
  28 #include "testing/gmock_mutant.h"
  29 #include "testing/gtest/include/gtest/gtest.h"
  30
  31 using base::hash_map;
  32 using std::set;
  33 using std::vector;
  34 using testing::CreateFunctor;
  35 using testing::InSequence;
  36 using testing::Invoke;
  37 using testing::Return;
  38 using testing::StrictMock;
  39 using testing::_;
  40
  41 namespace net {
  42 namespace test {
  43 namespace {
  44
  45 const QuicPriority kHighestPriority = 0;
  46 const QuicPriority kSomeMiddlePriority = 3;
  47
  48 class TestCryptoStream : public QuicCryptoStream {
  49  public:
  50   explicit TestCryptoStream(QuicSession* session)
  51       : QuicCryptoStream(session) {
  52   }
  53
  54   virtual void OnHandshakeMessage(
  55       const CryptoHandshakeMessage& message) OVERRIDE {
  56     encryption_established_ = true;
  57     handshake_confirmed_ = true;
  58     CryptoHandshakeMessage msg;
  59     string error_details;
  60     session()->config()->SetInitialFlowControlWindowToSend(
  61         kInitialSessionFlowControlWindowForTest);
  62     session()->config()->SetInitialStreamFlowControlWindowToSend(
  63         kInitialStreamFlowControlWindowForTest);
  64     session()->config()->SetInitialSessionFlowControlWindowToSend(
  65         kInitialSessionFlowControlWindowForTest);
  66     session()->config()->ToHandshakeMessage(&msg);
  67     const QuicErrorCode error = session()->config()->ProcessPeerHello(
  68         msg, CLIENT, &error_details);
  69     EXPECT_EQ(QUIC_NO_ERROR, error);
  70     session()->OnConfigNegotiated();
  71     session()->OnCryptoHandshakeEvent(QuicSession::HANDSHAKE_CONFIRMED);
  72   }
  73
  74   MOCK_METHOD0(OnCanWrite, void());
  75 };
  76
  77 class TestHeadersStream : public QuicHeadersStream {
  78  public:
  79   explicit TestHeadersStream(QuicSession* session)
  80       : QuicHeadersStream(session) {
  81   }
  82
  83   MOCK_METHOD0(OnCanWrite, void());
  84 };
  85
  86 class TestStream : public QuicDataStream {
  87  public:
  88   TestStream(QuicStreamId id, QuicSession* session)
  89       : QuicDataStream(id, session) {
  90   }
  91
  92   using ReliableQuicStream::CloseWriteSide;
  93
  94   virtual uint32 ProcessData(const char* data, uint32 data_len) OVERRIDE {
  95     return data_len;
  96   }
  97
  98   void SendBody(const string& data, bool fin) {
  99     WriteOrBufferData(data, fin, NULL);
 100   }
 101
 102   MOCK_METHOD0(OnCanWrite, void());
 103 };
 104
 105 // Poor man's functor for use as callback in a mock.
 106 class StreamBlocker {
 107  public:
 108   StreamBlocker(QuicSession* session, QuicStreamId stream_id)
 109       : session_(session),
 110         stream_id_(stream_id) {
 111   }
 112
 113   void MarkWriteBlocked() {
 114     session_->MarkWriteBlocked(stream_id_, kSomeMiddlePriority);
 115   }
 116
 117  private:
 118   QuicSession* const session_;
 119   const QuicStreamId stream_id_;
 120 };
 121
 122 class TestSession : public QuicSession {
 123  public:
 124   explicit TestSession(QuicConnection* connection)
 125       : QuicSession(connection,
 126                     DefaultQuicConfig()),
 127         crypto_stream_(this),
 128         writev_consumes_all_data_(false) {}
 129
 130   virtual TestCryptoStream* GetCryptoStream() OVERRIDE {
 131     return &crypto_stream_;
 132   }
 133
 134   virtual TestStream* CreateOutgoingDataStream() OVERRIDE {
 135     TestStream* stream = new TestStream(GetNextStreamId(), this);
 136     ActivateStream(stream);
 137     return stream;
 138   }
 139
 140   virtual TestStream* CreateIncomingDataStream(QuicStreamId id) OVERRIDE {
 141     return new TestStream(id, this);
 142   }
 143
 144   bool IsClosedStream(QuicStreamId id) {
 145     return QuicSession::IsClosedStream(id);
 146   }
 147
 148   QuicDataStream* GetIncomingDataStream(QuicStreamId stream_id) {
 149     return QuicSession::GetIncomingDataStream(stream_id);
 150   }
 151
 152   virtual QuicConsumedData WritevData(
 153       QuicStreamId id,
 154       const IOVector& data,
 155       QuicStreamOffset offset,
 156       bool fin,
 157       FecProtection fec_protection,
 158       QuicAckNotifier::DelegateInterface* ack_notifier_delegate) OVERRIDE {
 159     // Always consumes everything.
 160     if (writev_consumes_all_data_) {
 161       return QuicConsumedData(data.TotalBufferSize(), fin);
 162     } else {
 163       return QuicSession::WritevData(id, data, offset, fin, fec_protection,
 164                                      ack_notifier_delegate);
 165     }
 166   }
 167
 168   void set_writev_consumes_all_data(bool val) {
 169     writev_consumes_all_data_ = val;
 170   }
 171
 172   QuicConsumedData SendStreamData(QuicStreamId id) {
 173     return WritevData(id, IOVector(), 0, true, MAY_FEC_PROTECT, NULL);
 174   }
 175
 176   using QuicSession::PostProcessAfterData;
 177
 178  private:
 179   StrictMock<TestCryptoStream> crypto_stream_;
 180
 181   bool writev_consumes_all_data_;
 182 };
 183
 184 class QuicSessionTest : public ::testing::TestWithParam<QuicVersion> {
 185  protected:
 186   QuicSessionTest()
 187       : connection_(new MockConnection(true, SupportedVersions(GetParam()))),
 188         session_(connection_) {
 189     session_.config()->SetInitialFlowControlWindowToSend(
 190         kInitialSessionFlowControlWindowForTest);
 191     session_.config()->SetInitialStreamFlowControlWindowToSend(
 192         kInitialStreamFlowControlWindowForTest);
 193     session_.config()->SetInitialSessionFlowControlWindowToSend(
 194         kInitialSessionFlowControlWindowForTest);
 195     headers_[":host"] = "www.google.com";
 196     headers_[":path"] = "/index.hml";
 197     headers_[":scheme"] = "http";
 198     headers_["cookie"] =
 199         "__utma=208381060.1228362404.1372200928.1372200928.1372200928.1; "
 200         "__utmc=160408618; "
 201         "GX=DQAAAOEAAACWJYdewdE9rIrW6qw3PtVi2-d729qaa-74KqOsM1NVQblK4VhX"
 202         "hoALMsy6HOdDad2Sz0flUByv7etmo3mLMidGrBoljqO9hSVA40SLqpG_iuKKSHX"
 203         "RW3Np4bq0F0SDGDNsW0DSmTS9ufMRrlpARJDS7qAI6M3bghqJp4eABKZiRqebHT"
 204         "pMU-RXvTI5D5oCF1vYxYofH_l1Kviuiy3oQ1kS1enqWgbhJ2t61_SNdv-1XJIS0"
 205         "O3YeHLmVCs62O6zp89QwakfAWK9d3IDQvVSJzCQsvxvNIvaZFa567MawWlXg0Rh"
 206         "1zFMi5vzcns38-8_Sns; "
 207         "GA=v*2%2Fmem*57968640*47239936%2Fmem*57968640*47114716%2Fno-nm-"
 208         "yj*15%2Fno-cc-yj*5%2Fpc-ch*133685%2Fpc-s-cr*133947%2Fpc-s-t*1339"
 209         "47%2Fno-nm-yj*4%2Fno-cc-yj*1%2Fceft-as*1%2Fceft-nqas*0%2Fad-ra-c"
 210         "v_p%2Fad-nr-cv_p-f*1%2Fad-v-cv_p*859%2Fad-ns-cv_p-f*1%2Ffn-v-ad%"
 211         "2Fpc-t*250%2Fpc-cm*461%2Fpc-s-cr*722%2Fpc-s-t*722%2Fau_p*4"
 212         "SICAID=AJKiYcHdKgxum7KMXG0ei2t1-W4OD1uW-ecNsCqC0wDuAXiDGIcT_HA2o1"
 213         "3Rs1UKCuBAF9g8rWNOFbxt8PSNSHFuIhOo2t6bJAVpCsMU5Laa6lewuTMYI8MzdQP"
 214         "ARHKyW-koxuhMZHUnGBJAM1gJODe0cATO_KGoX4pbbFxxJ5IicRxOrWK_5rU3cdy6"
 215         "edlR9FsEdH6iujMcHkbE5l18ehJDwTWmBKBzVD87naobhMMrF6VvnDGxQVGp9Ir_b"
 216         "Rgj3RWUoPumQVCxtSOBdX0GlJOEcDTNCzQIm9BSfetog_eP_TfYubKudt5eMsXmN6"
 217         "QnyXHeGeK2UINUzJ-D30AFcpqYgH9_1BvYSpi7fc7_ydBU8TaD8ZRxvtnzXqj0RfG"
 218         "tuHghmv3aD-uzSYJ75XDdzKdizZ86IG6Fbn1XFhYZM-fbHhm3mVEXnyRW4ZuNOLFk"
 219         "Fas6LMcVC6Q8QLlHYbXBpdNFuGbuZGUnav5C-2I_-46lL0NGg3GewxGKGHvHEfoyn"
 220         "EFFlEYHsBQ98rXImL8ySDycdLEFvBPdtctPmWCfTxwmoSMLHU2SCVDhbqMWU5b0yr"
 221         "JBCScs_ejbKaqBDoB7ZGxTvqlrB__2ZmnHHjCr8RgMRtKNtIeuZAo ";
 222   }
 223
 224   void CheckClosedStreams() {
 225     for (int i = kCryptoStreamId; i < 100; i++) {
 226       if (closed_streams_.count(i) == 0) {
 227         EXPECT_FALSE(session_.IsClosedStream(i)) << " stream id: " << i;
 228       } else {
 229         EXPECT_TRUE(session_.IsClosedStream(i)) << " stream id: " << i;
 230       }
 231     }
 232   }
 233
 234   void CloseStream(QuicStreamId id) {
 235     session_.CloseStream(id);
 236     closed_streams_.insert(id);
 237   }
 238
 239   QuicVersion version() const { return connection_->version(); }
 240
 241   MockConnection* connection_;
 242   TestSession session_;
 243   set<QuicStreamId> closed_streams_;
 244   SpdyHeaderBlock headers_;
 245 };
 246
 247 INSTANTIATE_TEST_CASE_P(Tests, QuicSessionTest,
 248                         ::testing::ValuesIn(QuicSupportedVersions()));
 249
 250 TEST_P(QuicSessionTest, PeerAddress) {
 251   EXPECT_EQ(IPEndPoint(Loopback4(), kTestPort), session_.peer_address());
 252 }
 253
 254 TEST_P(QuicSessionTest, IsCryptoHandshakeConfirmed) {
 255   EXPECT_FALSE(session_.IsCryptoHandshakeConfirmed());
 256   CryptoHandshakeMessage message;
 257   session_.GetCryptoStream()->OnHandshakeMessage(message);
 258   EXPECT_TRUE(session_.IsCryptoHandshakeConfirmed());
 259 }
 260
 261 TEST_P(QuicSessionTest, IsClosedStreamDefault) {
 262   // Ensure that no streams are initially closed.
 263   for (int i = kCryptoStreamId; i < 100; i++) {
 264     EXPECT_FALSE(session_.IsClosedStream(i)) << "stream id: " << i;
 265   }
 266 }
 267
 268 TEST_P(QuicSessionTest, ImplicitlyCreatedStreams) {
 269   ASSERT_TRUE(session_.GetIncomingDataStream(7) != NULL);
 270   // Both 3 and 5 should be implicitly created.
 271   EXPECT_FALSE(session_.IsClosedStream(3));
 272   EXPECT_FALSE(session_.IsClosedStream(5));
 273   ASSERT_TRUE(session_.GetIncomingDataStream(5) != NULL);
 274   ASSERT_TRUE(session_.GetIncomingDataStream(3) != NULL);
 275 }
 276
 277 TEST_P(QuicSessionTest, IsClosedStreamLocallyCreated) {
 278   TestStream* stream2 = session_.CreateOutgoingDataStream();
 279   EXPECT_EQ(2u, stream2->id());
 280   TestStream* stream4 = session_.CreateOutgoingDataStream();
 281   EXPECT_EQ(4u, stream4->id());
 282
 283   CheckClosedStreams();
 284   CloseStream(4);
 285   CheckClosedStreams();
 286   CloseStream(2);
 287   CheckClosedStreams();
 288 }
 289
 290 TEST_P(QuicSessionTest, IsClosedStreamPeerCreated) {
 291   QuicStreamId stream_id1 = kClientDataStreamId1;
 292   QuicStreamId stream_id2 = kClientDataStreamId2;
 293   QuicDataStream* stream1 = session_.GetIncomingDataStream(stream_id1);
 294   QuicDataStreamPeer::SetHeadersDecompressed(stream1, true);
 295   QuicDataStream* stream2 = session_.GetIncomingDataStream(stream_id2);
 296   QuicDataStreamPeer::SetHeadersDecompressed(stream2, true);
 297
 298   CheckClosedStreams();
 299   CloseStream(stream_id1);
 300   CheckClosedStreams();
 301   CloseStream(stream_id2);
 302   // Create a stream explicitly, and another implicitly.
 303   QuicDataStream* stream3 = session_.GetIncomingDataStream(stream_id2 + 4);
 304   QuicDataStreamPeer::SetHeadersDecompressed(stream3, true);
 305   CheckClosedStreams();
 306   // Close one, but make sure the other is still not closed
 307   CloseStream(stream3->id());
 308   CheckClosedStreams();
 309 }
 310
 311 TEST_P(QuicSessionTest, StreamIdTooLarge) {
 312   QuicStreamId stream_id = kClientDataStreamId1;
 313   session_.GetIncomingDataStream(stream_id);
 314   EXPECT_CALL(*connection_, SendConnectionClose(QUIC_INVALID_STREAM_ID));
 315   session_.GetIncomingDataStream(stream_id + kMaxStreamIdDelta + 2);
 316 }
 317
 318 TEST_P(QuicSessionTest, DecompressionError) {
 319   QuicHeadersStream* stream = QuicSessionPeer::GetHeadersStream(&session_);
 320   const unsigned char data[] = {
 321     0x80, 0x03, 0x00, 0x01,  // SPDY/3 SYN_STREAM frame
 322     0x00, 0x00, 0x00, 0x25,  // flags/length
 323     0x00, 0x00, 0x00, 0x05,  // stream id
 324     0x00, 0x00, 0x00, 0x00,  // associated stream id
 325     0x00, 0x00,
 326     'a',  'b',  'c',  'd'    // invalid compressed data
 327   };
 328   EXPECT_CALL(*connection_,
 329               SendConnectionCloseWithDetails(QUIC_INVALID_HEADERS_STREAM_DATA,
 330                                              "SPDY framing error."));
 331   stream->ProcessRawData(reinterpret_cast<const char*>(data),
 332                          arraysize(data));
 333 }
 334
 335 TEST_P(QuicSessionTest, DebugDFatalIfMarkingClosedStreamWriteBlocked) {
 336   TestStream* stream2 = session_.CreateOutgoingDataStream();
 337   // Close the stream.
 338   stream2->Reset(QUIC_BAD_APPLICATION_PAYLOAD);
 339   // TODO(rtenneti): enable when chromium supports EXPECT_DEBUG_DFATAL.
 340   /*
 341   QuicStreamId kClosedStreamId = stream2->id();
 342   EXPECT_DEBUG_DFATAL(
 343       session_.MarkWriteBlocked(kClosedStreamId, kSomeMiddlePriority),
 344       "Marking unknown stream 2 blocked.");
 345   */
 346 }
 347
 348 TEST_P(QuicSessionTest, DebugDFatalIfMarkWriteBlockedCalledWithWrongPriority) {
 349   const QuicPriority kDifferentPriority = 0;
 350
 351   TestStream* stream2 = session_.CreateOutgoingDataStream();
 352   EXPECT_NE(kDifferentPriority, stream2->EffectivePriority());
 353   // TODO(rtenneti): enable when chromium supports EXPECT_DEBUG_DFATAL.
 354   /*
 355   EXPECT_DEBUG_DFATAL(
 356       session_.MarkWriteBlocked(stream2->id(), kDifferentPriority),
 357       "Priorities do not match.  Got: 0 Expected: 3");
 358   */
 359 }
 360
 361 TEST_P(QuicSessionTest, OnCanWrite) {
 362   TestStream* stream2 = session_.CreateOutgoingDataStream();
 363   TestStream* stream4 = session_.CreateOutgoingDataStream();
 364   TestStream* stream6 = session_.CreateOutgoingDataStream();
 365
 366   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 367   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 368   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 369
 370   InSequence s;
 371   StreamBlocker stream2_blocker(&session_, stream2->id());
 372   // Reregister, to test the loop limit.
 373   EXPECT_CALL(*stream2, OnCanWrite())
 374       .WillOnce(Invoke(&stream2_blocker, &StreamBlocker::MarkWriteBlocked));
 375   EXPECT_CALL(*stream6, OnCanWrite());
 376   EXPECT_CALL(*stream4, OnCanWrite());
 377   session_.OnCanWrite();
 378   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 379 }
 380
 381 TEST_P(QuicSessionTest, OnCanWriteBundlesStreams) {
 382   // Drive congestion control manually.
 383   MockSendAlgorithm* send_algorithm = new StrictMock<MockSendAlgorithm>;
 384   QuicConnectionPeer::SetSendAlgorithm(session_.connection(), send_algorithm);
 385
 386   TestStream* stream2 = session_.CreateOutgoingDataStream();
 387   TestStream* stream4 = session_.CreateOutgoingDataStream();
 388   TestStream* stream6 = session_.CreateOutgoingDataStream();
 389
 390   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 391   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 392   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 393
 394   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillRepeatedly(
 395       Return(QuicTime::Delta::Zero()));
 396   EXPECT_CALL(*send_algorithm, GetCongestionWindow())
 397       .WillOnce(Return(kMaxPacketSize * 10));
 398   EXPECT_CALL(*stream2, OnCanWrite())
 399       .WillOnce(IgnoreResult(Invoke(CreateFunctor(
 400           &session_, &TestSession::SendStreamData, stream2->id()))));
 401   EXPECT_CALL(*stream4, OnCanWrite())
 402       .WillOnce(IgnoreResult(Invoke(CreateFunctor(
 403           &session_, &TestSession::SendStreamData, stream4->id()))));
 404   EXPECT_CALL(*stream6, OnCanWrite())
 405       .WillOnce(IgnoreResult(Invoke(CreateFunctor(
 406           &session_, &TestSession::SendStreamData, stream6->id()))));
 407
 408   // Expect that we only send one packet, the writes from different streams
 409   // should be bundled together.
 410   MockPacketWriter* writer =
 411       static_cast<MockPacketWriter*>(
 412           QuicConnectionPeer::GetWriter(session_.connection()));
 413   EXPECT_CALL(*writer, WritePacket(_, _, _, _)).WillOnce(
 414                   Return(WriteResult(WRITE_STATUS_OK, 0)));
 415   EXPECT_CALL(*send_algorithm, OnPacketSent(_, _, _, _, _)).Times(1);
 416   session_.OnCanWrite();
 417   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 418 }
 419
 420 TEST_P(QuicSessionTest, OnCanWriteCongestionControlBlocks) {
 421   InSequence s;
 422
 423   // Drive congestion control manually.
 424   MockSendAlgorithm* send_algorithm = new StrictMock<MockSendAlgorithm>;
 425   QuicConnectionPeer::SetSendAlgorithm(session_.connection(), send_algorithm);
 426
 427   TestStream* stream2 = session_.CreateOutgoingDataStream();
 428   TestStream* stream4 = session_.CreateOutgoingDataStream();
 429   TestStream* stream6 = session_.CreateOutgoingDataStream();
 430
 431   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 432   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 433   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 434
 435   StreamBlocker stream2_blocker(&session_, stream2->id());
 436   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 437       QuicTime::Delta::Zero()));
 438   EXPECT_CALL(*stream2, OnCanWrite());
 439   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 440       QuicTime::Delta::Zero()));
 441   EXPECT_CALL(*stream6, OnCanWrite());
 442   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 443       QuicTime::Delta::Infinite()));
 444   // stream4->OnCanWrite is not called.
 445
 446   session_.OnCanWrite();
 447   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 448
 449   // Still congestion-control blocked.
 450   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 451       QuicTime::Delta::Infinite()));
 452   session_.OnCanWrite();
 453   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 454
 455   // stream4->OnCanWrite is called once the connection stops being
 456   // congestion-control blocked.
 457   EXPECT_CALL(*send_algorithm, TimeUntilSend(_, _, _)).WillOnce(Return(
 458       QuicTime::Delta::Zero()));
 459   EXPECT_CALL(*stream4, OnCanWrite());
 460   session_.OnCanWrite();
 461   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 462 }
 463
 464 TEST_P(QuicSessionTest, BufferedHandshake) {
 465   EXPECT_FALSE(session_.HasPendingHandshake());  // Default value.
 466
 467   // Test that blocking other streams does not change our status.
 468   TestStream* stream2 = session_.CreateOutgoingDataStream();
 469   StreamBlocker stream2_blocker(&session_, stream2->id());
 470   stream2_blocker.MarkWriteBlocked();
 471   EXPECT_FALSE(session_.HasPendingHandshake());
 472
 473   TestStream* stream3 = session_.CreateOutgoingDataStream();
 474   StreamBlocker stream3_blocker(&session_, stream3->id());
 475   stream3_blocker.MarkWriteBlocked();
 476   EXPECT_FALSE(session_.HasPendingHandshake());
 477
 478   // Blocking (due to buffering of) the Crypto stream is detected.
 479   session_.MarkWriteBlocked(kCryptoStreamId, kHighestPriority);
 480   EXPECT_TRUE(session_.HasPendingHandshake());
 481
 482   TestStream* stream4 = session_.CreateOutgoingDataStream();
 483   StreamBlocker stream4_blocker(&session_, stream4->id());
 484   stream4_blocker.MarkWriteBlocked();
 485   EXPECT_TRUE(session_.HasPendingHandshake());
 486
 487   InSequence s;
 488   // Force most streams to re-register, which is common scenario when we block
 489   // the Crypto stream, and only the crypto stream can "really" write.
 490
 491   // Due to prioritization, we *should* be asked to write the crypto stream
 492   // first.
 493   // Don't re-register the crypto stream (which signals complete writing).
 494   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 495   EXPECT_CALL(*crypto_stream, OnCanWrite());
 496
 497   // Re-register all other streams, to show they weren't able to proceed.
 498   EXPECT_CALL(*stream2, OnCanWrite())
 499       .WillOnce(Invoke(&stream2_blocker, &StreamBlocker::MarkWriteBlocked));
 500   EXPECT_CALL(*stream3, OnCanWrite())
 501       .WillOnce(Invoke(&stream3_blocker, &StreamBlocker::MarkWriteBlocked));
 502   EXPECT_CALL(*stream4, OnCanWrite())
 503       .WillOnce(Invoke(&stream4_blocker, &StreamBlocker::MarkWriteBlocked));
 504
 505   session_.OnCanWrite();
 506   EXPECT_TRUE(session_.WillingAndAbleToWrite());
 507   EXPECT_FALSE(session_.HasPendingHandshake());  // Crypto stream wrote.
 508 }
 509
 510 TEST_P(QuicSessionTest, OnCanWriteWithClosedStream) {
 511   TestStream* stream2 = session_.CreateOutgoingDataStream();
 512   TestStream* stream4 = session_.CreateOutgoingDataStream();
 513   TestStream* stream6 = session_.CreateOutgoingDataStream();
 514
 515   session_.MarkWriteBlocked(stream2->id(), kSomeMiddlePriority);
 516   session_.MarkWriteBlocked(stream6->id(), kSomeMiddlePriority);
 517   session_.MarkWriteBlocked(stream4->id(), kSomeMiddlePriority);
 518   CloseStream(stream6->id());
 519
 520   InSequence s;
 521   EXPECT_CALL(*stream2, OnCanWrite());
 522   EXPECT_CALL(*stream4, OnCanWrite());
 523   session_.OnCanWrite();
 524   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 525 }
 526
 527 TEST_P(QuicSessionTest, OnCanWriteLimitsNumWritesIfFlowControlBlocked) {
 528   if (version() < QUIC_VERSION_19) {
 529     return;
 530   }
 531
 532   ValueRestore<bool> old_flag(&FLAGS_enable_quic_connection_flow_control_2,
 533                               true);
 534   // Ensure connection level flow control blockage.
 535   QuicFlowControllerPeer::SetSendWindowOffset(session_.flow_controller(), 0);
 536   EXPECT_TRUE(session_.flow_controller()->IsBlocked());
 537
 538   // Mark the crypto and headers streams as write blocked, we expect them to be
 539   // allowed to write later.
 540   session_.MarkWriteBlocked(kCryptoStreamId, kHighestPriority);
 541   session_.MarkWriteBlocked(kHeadersStreamId, kHighestPriority);
 542
 543   // Create a data stream, and although it is write blocked we never expect it
 544   // to be allowed to write as we are connection level flow control blocked.
 545   TestStream* stream = session_.CreateOutgoingDataStream();
 546   session_.MarkWriteBlocked(stream->id(), kSomeMiddlePriority);
 547   EXPECT_CALL(*stream, OnCanWrite()).Times(0);
 548
 549   // The crypto and headers streams should be called even though we are
 550   // connection flow control blocked.
 551   TestCryptoStream* crypto_stream = session_.GetCryptoStream();
 552   EXPECT_CALL(*crypto_stream, OnCanWrite()).Times(1);
 553   TestHeadersStream* headers_stream = new TestHeadersStream(&session_);
 554   QuicSessionPeer::SetHeadersStream(&session_, headers_stream);
 555   EXPECT_CALL(*headers_stream, OnCanWrite()).Times(1);
 556
 557   session_.OnCanWrite();
 558   EXPECT_FALSE(session_.WillingAndAbleToWrite());
 559 }
 560
 561 TEST_P(QuicSessionTest, SendGoAway) {
 562   EXPECT_CALL(*connection_,
 563               SendGoAway(QUIC_PEER_GOING_AWAY, 0u, "Going Away."));
 564   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 565   EXPECT_TRUE(session_.goaway_sent());
 566
 567   EXPECT_CALL(*connection_,
 568               SendRstStream(3u, QUIC_STREAM_PEER_GOING_AWAY, 0)).Times(0);
 569   EXPECT_TRUE(session_.GetIncomingDataStream(3u));
 570 }
 571
 572 TEST_P(QuicSessionTest, DoNotSendGoAwayTwice) {
 573   EXPECT_CALL(*connection_,
 574               SendGoAway(QUIC_PEER_GOING_AWAY, 0u, "Going Away.")).Times(1);
 575   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 576   EXPECT_TRUE(session_.goaway_sent());
 577   session_.SendGoAway(QUIC_PEER_GOING_AWAY, "Going Away.");
 578 }
 579
 580 TEST_P(QuicSessionTest, IncreasedTimeoutAfterCryptoHandshake) {
 581   EXPECT_EQ(kDefaultInitialTimeoutSecs,
 582             QuicConnectionPeer::GetNetworkTimeout(connection_).ToSeconds());
 583   CryptoHandshakeMessage msg;
 584   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 585   EXPECT_EQ(kDefaultTimeoutSecs,
 586             QuicConnectionPeer::GetNetworkTimeout(connection_).ToSeconds());
 587 }
 588
 589 TEST_P(QuicSessionTest, RstStreamBeforeHeadersDecompressed) {
 590   // Send two bytes of payload.
 591   QuicStreamFrame data1(kClientDataStreamId1, false, 0, MakeIOVector("HT"));
 592   vector<QuicStreamFrame> frames;
 593   frames.push_back(data1);
 594   session_.OnStreamFrames(frames);
 595   EXPECT_EQ(1u, session_.GetNumOpenStreams());
 596
 597   QuicRstStreamFrame rst1(kClientDataStreamId1, QUIC_STREAM_NO_ERROR, 0);
 598   session_.OnRstStream(rst1);
 599   EXPECT_EQ(0u, session_.GetNumOpenStreams());
 600   // Connection should remain alive.
 601   EXPECT_TRUE(connection_->connected());
 602 }
 603
 604 TEST_P(QuicSessionTest, MultipleRstStreamsCauseSingleConnectionClose) {
 605   // If multiple invalid reset stream frames arrive in a single packet, this
 606   // should trigger a connection close. However there is no need to send
 607   // multiple connection close frames.
 608
 609   // Create valid stream.
 610   QuicStreamFrame data1(kClientDataStreamId1, false, 0, MakeIOVector("HT"));
 611   vector<QuicStreamFrame> frames;
 612   frames.push_back(data1);
 613   session_.OnStreamFrames(frames);
 614   EXPECT_EQ(1u, session_.GetNumOpenStreams());
 615
 616   // Process first invalid stream reset, resulting in the connection being
 617   // closed.
 618   EXPECT_CALL(*connection_, SendConnectionClose(QUIC_INVALID_STREAM_ID))
 619       .Times(1);
 620   QuicStreamId kLargeInvalidStreamId = 99999999;
 621   QuicRstStreamFrame rst1(kLargeInvalidStreamId, QUIC_STREAM_NO_ERROR, 0);
 622   session_.OnRstStream(rst1);
 623   QuicConnectionPeer::CloseConnection(connection_);
 624
 625   // Processing of second invalid stream reset should not result in the
 626   // connection being closed for a second time.
 627   QuicRstStreamFrame rst2(kLargeInvalidStreamId, QUIC_STREAM_NO_ERROR, 0);
 628   session_.OnRstStream(rst2);
 629 }
 630
 631 TEST_P(QuicSessionTest, HandshakeUnblocksFlowControlBlockedStream) {
 632   // Test that if a stream is flow control blocked, then on receipt of the SHLO
 633   // containing a suitable send window offset, the stream becomes unblocked.
 634   if (version() <= QUIC_VERSION_16) {
 635     return;
 636   }
 637
 638   // Ensure that Writev consumes all the data it is given (simulate no socket
 639   // blocking).
 640   session_.set_writev_consumes_all_data(true);
 641
 642   // Create a stream, and send enough data to make it flow control blocked.
 643   TestStream* stream2 = session_.CreateOutgoingDataStream();
 644   string body(kDefaultFlowControlSendWindow, '.');
 645   EXPECT_FALSE(stream2->flow_controller()->IsBlocked());
 646   stream2->SendBody(body, false);
 647   EXPECT_TRUE(stream2->flow_controller()->IsBlocked());
 648
 649   // Now complete the crypto handshake, resulting in an increased flow control
 650   // send window.
 651   CryptoHandshakeMessage msg;
 652   session_.GetCryptoStream()->OnHandshakeMessage(msg);
 653
 654   // Stream is now unblocked.
 655   EXPECT_FALSE(stream2->flow_controller()->IsBlocked());
 656 }
 657
 658 TEST_P(QuicSessionTest, InvalidFlowControlWindowInHandshake) {
 659   // TODO(rjshade): Remove this test when removing QUIC_VERSION_19.
 660   // Test that receipt of an invalid (< default) flow control window from
 661   // the peer results in the connection being torn down.
 662   if (version() <= QUIC_VERSION_16 || version() > QUIC_VERSION_19) {
 663     return;
 664   }
 665
 666   uint32 kInvalidWindow = kDefaultFlowControlSendWindow - 1;
 667   QuicConfigPeer::SetReceivedInitialFlowControlWindow(session_.config(),
 668                                                       kInvalidWindow);
 669
 670   EXPECT_CALL(*connection_,
 671               SendConnectionClose(QUIC_FLOW_CONTROL_INVALID_WINDOW)).Times(2);
 672   session_.OnConfigNegotiated();
 673 }
 674
 675 TEST_P(QuicSessionTest, InvalidStreamFlowControlWindowInHandshake) {
 676   // Test that receipt of an invalid (< default) stream flow control window from
 677   // the peer results in the connection being torn down.
 678   if (version() <= QUIC_VERSION_19) {
 679     return;
 680   }
 681
 682   uint32 kInvalidWindow = kDefaultFlowControlSendWindow - 1;
 683   QuicConfigPeer::SetReceivedInitialStreamFlowControlWindow(session_.config(),
 684                                                             kInvalidWindow);
 685
 686   EXPECT_CALL(*connection_,
 687               SendConnectionClose(QUIC_FLOW_CONTROL_INVALID_WINDOW));
 688   session_.OnConfigNegotiated();
 689 }
 690
 691 TEST_P(QuicSessionTest, InvalidSessionFlowControlWindowInHandshake) {
 692   // Test that receipt of an invalid (< default) session flow control window
 693   // from the peer results in the connection being torn down.
 694   if (version() <= QUIC_VERSION_19) {
 695     return;
 696   }
 697
 698   uint32 kInvalidWindow = kDefaultFlowControlSendWindow - 1;
 699   QuicConfigPeer::SetReceivedInitialSessionFlowControlWindow(session_.config(),
 700                                                              kInvalidWindow);
 701
 702   EXPECT_CALL(*connection_,
 703               SendConnectionClose(QUIC_FLOW_CONTROL_INVALID_WINDOW));
 704   session_.OnConfigNegotiated();
 705 }
 706
 707 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingRstOutOfOrder) {
 708   if (version() < QUIC_VERSION_19) {
 709     return;
 710   }
 711
 712   ValueRestore<bool> old_flag(&FLAGS_enable_quic_connection_flow_control_2,
 713                               true);
 714   // Test that when we receive an out of order stream RST we correctly adjust
 715   // our connection level flow control receive window.
 716   // On close, the stream should mark as consumed all bytes between the highest
 717   // byte consumed so far and the final byte offset from the RST frame.
 718   TestStream* stream = session_.CreateOutgoingDataStream();
 719
 720   const QuicStreamOffset kByteOffset =
 721       1 + kInitialSessionFlowControlWindowForTest / 2;
 722
 723   // Expect no stream WINDOW_UPDATE frames, as stream read side closed.
 724   EXPECT_CALL(*connection_, SendWindowUpdate(stream->id(), _)).Times(0);
 725   // We do expect a connection level WINDOW_UPDATE when the stream is reset.
 726   EXPECT_CALL(*connection_,
 727               SendWindowUpdate(0, kInitialSessionFlowControlWindowForTest +
 728                                       kByteOffset)).Times(1);
 729
 730   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 731                                kByteOffset);
 732   session_.OnRstStream(rst_frame);
 733   session_.PostProcessAfterData();
 734   EXPECT_EQ(kByteOffset, session_.flow_controller()->bytes_consumed());
 735 }
 736
 737 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingFinAndLocalReset) {
 738   if (version() < QUIC_VERSION_19) {
 739     return;
 740   }
 741
 742   ValueRestore<bool> old_flag(&FLAGS_enable_quic_connection_flow_control_2,
 743                               true);
 744   // Test the situation where we receive a FIN on a stream, and before we fully
 745   // consume all the data from the sequencer buffer we locally RST the stream.
 746   // The bytes between highest consumed byte, and the final byte offset that we
 747   // determined when the FIN arrived, should be marked as consumed at the
 748   // connection level flow controller when the stream is reset.
 749   TestStream* stream = session_.CreateOutgoingDataStream();
 750
 751   const QuicStreamOffset kByteOffset =
 752       1 + kInitialSessionFlowControlWindowForTest / 2;
 753   QuicStreamFrame frame(stream->id(), true, kByteOffset, IOVector());
 754   vector<QuicStreamFrame> frames;
 755   frames.push_back(frame);
 756   session_.OnStreamFrames(frames);
 757   session_.PostProcessAfterData();
 758
 759   EXPECT_EQ(0u, stream->flow_controller()->bytes_consumed());
 760   EXPECT_EQ(kByteOffset,
 761             stream->flow_controller()->highest_received_byte_offset());
 762
 763   // We only expect to see a connection WINDOW_UPDATE when talking
 764   // QUIC_VERSION_19, as in this case both stream and session flow control
 765   // windows are the same size. In later versions we will not see a connection
 766   // level WINDOW_UPDATE when exhausting a stream, as the stream flow control
 767   // limit is much lower than the connection flow control limit.
 768   if (version() == QUIC_VERSION_19) {
 769     // Expect no stream WINDOW_UPDATE frames, as stream read side closed.
 770     EXPECT_CALL(*connection_, SendWindowUpdate(stream->id(), _)).Times(0);
 771     // We do expect a connection level WINDOW_UPDATE when the stream is reset.
 772     EXPECT_CALL(*connection_,
 773                 SendWindowUpdate(0, kInitialSessionFlowControlWindowForTest +
 774                                         kByteOffset)).Times(1);
 775   }
 776
 777   // Reset stream locally.
 778   stream->Reset(QUIC_STREAM_CANCELLED);
 779   EXPECT_EQ(kByteOffset, session_.flow_controller()->bytes_consumed());
 780 }
 781
 782 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingFinAfterRst) {
 783   // Test that when we RST the stream (and tear down stream state), and then
 784   // receive a FIN from the peer, we correctly adjust our connection level flow
 785   // control receive window.
 786   if (version() < QUIC_VERSION_19) {
 787     return;
 788   }
 789
 790   ValueRestore<bool> old_flag(&FLAGS_enable_quic_connection_flow_control_2,
 791                               true);
 792   // Connection starts with some non-zero highest received byte offset,
 793   // due to other active streams.
 794   const uint64 kInitialConnectionBytesConsumed = 567;
 795   const uint64 kInitialConnectionHighestReceivedOffset = 1234;
 796   EXPECT_LT(kInitialConnectionBytesConsumed,
 797             kInitialConnectionHighestReceivedOffset);
 798   session_.flow_controller()->UpdateHighestReceivedOffset(
 799       kInitialConnectionHighestReceivedOffset);
 800   session_.flow_controller()->AddBytesConsumed(kInitialConnectionBytesConsumed);
 801
 802   // Reset our stream: this results in the stream being closed locally.
 803   TestStream* stream = session_.CreateOutgoingDataStream();
 804   stream->Reset(QUIC_STREAM_CANCELLED);
 805
 806   // Now receive a response from the peer with a FIN. We should handle this by
 807   // adjusting the connection level flow control receive window to take into
 808   // account the total number of bytes sent by the peer.
 809   const QuicStreamOffset kByteOffset = 5678;
 810   string body = "hello";
 811   IOVector data = MakeIOVector(body);
 812   QuicStreamFrame frame(stream->id(), true, kByteOffset, data);
 813   vector<QuicStreamFrame> frames;
 814   frames.push_back(frame);
 815   session_.OnStreamFrames(frames);
 816
 817   QuicStreamOffset total_stream_bytes_sent_by_peer =
 818       kByteOffset + body.length();
 819   EXPECT_EQ(kInitialConnectionBytesConsumed + total_stream_bytes_sent_by_peer,
 820             session_.flow_controller()->bytes_consumed());
 821   EXPECT_EQ(
 822       kInitialConnectionHighestReceivedOffset + total_stream_bytes_sent_by_peer,
 823       session_.flow_controller()->highest_received_byte_offset());
 824 }
 825
 826 TEST_P(QuicSessionTest, ConnectionFlowControlAccountingRstAfterRst) {
 827   // Test that when we RST the stream (and tear down stream state), and then
 828   // receive a RST from the peer, we correctly adjust our connection level flow
 829   // control receive window.
 830   if (version() < QUIC_VERSION_19) {
 831     return;
 832   }
 833
 834   ValueRestore<bool> old_flag(&FLAGS_enable_quic_connection_flow_control_2,
 835                               true);
 836   // Connection starts with some non-zero highest received byte offset,
 837   // due to other active streams.
 838   const uint64 kInitialConnectionBytesConsumed = 567;
 839   const uint64 kInitialConnectionHighestReceivedOffset = 1234;
 840   EXPECT_LT(kInitialConnectionBytesConsumed,
 841             kInitialConnectionHighestReceivedOffset);
 842   session_.flow_controller()->UpdateHighestReceivedOffset(
 843       kInitialConnectionHighestReceivedOffset);
 844   session_.flow_controller()->AddBytesConsumed(kInitialConnectionBytesConsumed);
 845
 846   // Reset our stream: this results in the stream being closed locally.
 847   TestStream* stream = session_.CreateOutgoingDataStream();
 848   stream->Reset(QUIC_STREAM_CANCELLED);
 849
 850   // Now receive a RST from the peer. We should handle this by adjusting the
 851   // connection level flow control receive window to take into account the total
 852   // number of bytes sent by the peer.
 853   const QuicStreamOffset kByteOffset = 5678;
 854   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 855                                kByteOffset);
 856   session_.OnRstStream(rst_frame);
 857
 858   EXPECT_EQ(kInitialConnectionBytesConsumed + kByteOffset,
 859             session_.flow_controller()->bytes_consumed());
 860   EXPECT_EQ(kInitialConnectionHighestReceivedOffset + kByteOffset,
 861             session_.flow_controller()->highest_received_byte_offset());
 862 }
 863
 864 TEST_P(QuicSessionTest, FlowControlWithInvalidFinalOffset) {
 865   // Test that if we receive a stream RST with a highest byte offset that
 866   // violates flow control, that we close the connection.
 867   if (version() <= QUIC_VERSION_16) {
 868     return;
 869   }
 870   ValueRestore<bool> old_flag(&FLAGS_enable_quic_connection_flow_control_2,
 871                               true);
 872
 873   const uint64 kLargeOffset = kInitialSessionFlowControlWindowForTest + 1;
 874   EXPECT_CALL(*connection_,
 875               SendConnectionClose(QUIC_FLOW_CONTROL_RECEIVED_TOO_MUCH_DATA))
 876       .Times(2);
 877
 878   // Check that stream frame + FIN results in connection close.
 879   TestStream* stream = session_.CreateOutgoingDataStream();
 880   stream->Reset(QUIC_STREAM_CANCELLED);
 881   QuicStreamFrame frame(stream->id(), true, kLargeOffset, IOVector());
 882   vector<QuicStreamFrame> frames;
 883   frames.push_back(frame);
 884   session_.OnStreamFrames(frames);
 885
 886   // Check that RST results in connection close.
 887   QuicRstStreamFrame rst_frame(stream->id(), QUIC_STREAM_CANCELLED,
 888                                kLargeOffset);
 889   session_.OnRstStream(rst_frame);
 890 }
 891
 892 TEST_P(QuicSessionTest, VersionNegotiationDisablesFlowControl) {
 893   if (version() < QUIC_VERSION_19) {
 894     return;
 895   }
 896
 897   ValueRestore<bool> old_flag(&FLAGS_enable_quic_connection_flow_control_2,
 898                               true);
 899   // Test that after successful version negotiation, flow control is disabled
 900   // appropriately at both the connection and stream level.
 901
 902   // Initially both stream and connection flow control are enabled.
 903   TestStream* stream = session_.CreateOutgoingDataStream();
 904   EXPECT_TRUE(stream->flow_controller()->IsEnabled());
 905   EXPECT_TRUE(session_.flow_controller()->IsEnabled());
 906
 907   // Version 18 implies that stream flow control is enabled, but connection
 908   // level is disabled.
 909   session_.OnSuccessfulVersionNegotiation(QUIC_VERSION_18);
 910   EXPECT_FALSE(session_.flow_controller()->IsEnabled());
 911   EXPECT_TRUE(stream->flow_controller()->IsEnabled());
 912
 913   // Version 16 means all flow control is disabled.
 914   session_.OnSuccessfulVersionNegotiation(QUIC_VERSION_16);
 915   EXPECT_FALSE(session_.flow_controller()->IsEnabled());
 916   EXPECT_FALSE(stream->flow_controller()->IsEnabled());
 917 }
 918
 919 }  // namespace
 920 }  // namespace test
 921 }  // namespace net